urleycay
Jan 22nd, 06, 1:03 PM
is the 71 454/425 a LS-5? and if so are they all two bolt mains from factory?
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mr Jan 22nd, 06, 1:51 PM According to Chevrolet by the numbers(1970-1975),it is a 4 bolt main,LS-6. It says there were///-(10)- built with suffix code-(CPY) and///-(4)-built with suffix code-(CPZ).Both these are listed as turbo-400 chevelle engines. Also listed is suffix code-(CPP) chevelle 4-speed with (no) numbers listed as to how many were built....425hp Corvette engines listed with aluminum heads/solid lifters-(CPW)4speed---(CPX)automatic........All LS-5 engines are listed as 365hp engines...... L7870_cortez Jan 22nd, 06, 2:16 PM LS-5 are two bolt,steel crank. Mike urleycay Jan 22nd, 06, 5:17 PM thanks f/ info since i wrote this i also found out that no LS-6's were verified in a- body's but your book seems to have the correct info. where can i get the book your using f/referance. It sure would help. thanks tony mr Jan 22nd, 06, 6:40 PM I bought mine at Barnes & Noble bookstore in Springfield,Mo. You can look online at amazon.com or barnesandnoble.com (save fuel and time). 1970-75 Chevrolet by the numbers,by Alan L. Colvin......Also a--(1955-59)---(1960-64)---(1965-69) book by same name & author....It is a pretty handy book to look up part numbers..or information in general.. | ||